Contents

Table of Contents

Creating Maps

All Wialon Pro products include an embedded WebGIS-3 server. All address information for online tracking and reports is taken only from this WebGIS.

AVD Maps Concept

AVD format refers to vector graphics files, which contain a map of a particular place or region. This format means to be used in applications developed on the basis of ADF software platform such as WebGIS.

The main concepts for the format are:

Layer

A set of objects that form together a collection. The number of layers is defined by the number of separable detail layers. For example, roads, plants, and buildings can form a separate layer, or each of them can have its own layer. Layers are considered when rendering (drawing) a map, but in the source file data for all layers is stored together.

Level

A parameter used to limit the amount of information displayed on the map. It is used when scaling (zooming) the map. 17 levels exist, and each has its minimum and maximum scale. The lowest and most detailed level is 0. Usually, it presents maximum amount of information (maximum elements). In the table below explore which levels are commonly used to draw different elements:

Levels

Element Type

0-4

Cities, towns, villages

5-10

Regions

9-15

Countries, states

15-16

Map of the world

The placement of particular element on a particular level is defined by system administrator while compiling the map, and by system designer while adjusting layers rendering configuration.

Tag

A special mark on the map, for example, city, country, etc. It can be used for search or for render. Examples:
tag: minsk,country_bytag: moscow,country_ru
Tags go in a comma-separated line each after another without spaces. The name the map file (without .avd extension) is automatically added as a tag.